Exostosis mouth is a term used to describe an overgrowth of calcified bone in the oral cavity. These bony protuberances are found on the maxilla (upper jaw) or the mandible (lower jaw). Although the term may sound grave, the condition is not only benign, but also uncommon and very rarely requires any treatment.
The Cleveland Clinic Journal of Medicine highlights a case of exostosis mouth, describing it as a benign, bony overgrowth that is sometimes detected by chance. Very often, if a person has these nodules in their mouth, they are unaware that they're an anomaly that most people do not exhibit clinically. In this particular case, the exostoses were present in the form of tori on both the upper and lower jaw. Since they were not causing any oral problems or symptoms, no treatment was indicated.